@book{22268,
	author = {Colombia. Leyes, etc. and Roa Díaz, Cornelio},
	title = {Régimen de contratación estatal /},
	publisher = {Ecoe Ediciones,},
	year = {2008},
	series = {Las Leyes de Colombia;},
	address = {Bogotá, Colombia :},
	note = {Incluye índice}
}